A is the right answer
This is because when plugged into each of the expressions, the both equal the same thing. Which means that this proves that the two hypotenuses are congruent, proving the triangles congruent by HL. <span />
Answer:
see explanation
Step-by-step explanation:
The terms form a geometric sequence with n th term
= a 
where a is the first term and r the common ratio
r = 
= 
= ......
r = 
= 
= - 2 and a = 3, hence
= 3 
← explicit formula
Answer:
306
Step-by-step explanation:
There are 102 triangles, a triangle has 3 sides, each side is 1 cm. 102 x 3=306
Answer:
-15 < x
Step-by-step explanation:
Since all terms are a multiple of 4, it can be convenient to start by dividing the equation by 4.
-16 < 2 + x - 3
-15 < x . . . . . . add 1 to both sides, collect terms
Answer:
y = 2x + 1 --> linear
y = -4x + 7 --> non-linear
Not a solution for linear system.
Step-by-step explanation:
for (a), y = 2x+1, substitute the x and y values. keep in mind, that in a linear pair, (x, y). So, for the first equation you get:
7 = 2x3 + 1. This is correct, because 6 + 1 is 7. Therefore, (a) is linear.
for (b), we have to substitute our values again. You get:
7 = -4x3 + 7, which is
7 = -12+7, which is not true. So, (b) is not linear.
This means that for the linear pair (3, 7), it does not satisfy both equations, which means that it is not a solution for the linear system.
